Title :
Origin of the stress-induced magnetic anisotropy in Fe-based nanocrystalline alloy
Author :
Ohnuma, M. ; Yanai, T. ; Nakano, M. ; Fukunaga, H. ; Yoshizawa, Y. ; Hono, K.
Author_Institution :
Nat. Inst. for Mater. Sci., Nagasaki Univ., Japan
Abstract :
In this study, the presence of structural anisotropy in stress-annealed Fe-Si-B-Nb-Cu nanocrystalline alloy was investigated. Also, the origin of this large magnetic anisotropy induced by the stress-annealing was discussed. Melt-spun amorphous ribbons with a composition of Fe73.5Si15.5B7Nb3Cu were heated to 550°C. A tensile stress was applied to the ribbons during the entire annealing process. X-ray diffraction profiles of the samples were measured in the transmission mode. Results showed that increasing the tensile stress induces a large anisotropy of the spacing of the [310] plane. In addition, the results revealed that the origin of the anisotropic energy is the magneto-elastic effect.
Keywords :
X-ray diffraction; amorphous magnetic materials; boron alloys; copper alloys; ferromagnetic materials; induced anisotropy (magnetic); iron alloys; magnetic annealing; magnetoelastic effects; melt spinning; nanostructured materials; niobium alloys; silicon alloys; tensile strength; 550 degC; Fe73.5Si15.5B7Nb3Cu; X-ray diffraction; magneto-elastic effect; melt-spun amorphous ribbons; nanocrystalline alloy; stress-annealing; stress-induced magnetic anisotropy; structural anisotropy; tensile stress; Amorphous magnetic materials; Amorphous materials; Anisotropic magnetoresistance; Annealing; Iron; Magnetic anisotropy; Niobium; Perpendicular magnetic anisotropy; Tensile stress; X-ray diffraction;
Conference_Titel :
Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International
Print_ISBN :
0-7803-9009-1
DOI :
10.1109/INTMAG.2005.1463456
